Mark 9:8
And suddenly they looked all around them, but the only one they saw with them was Jesus.
Luke 9:36
And after the voice had spoken, Jesus was found alone. But the apostles kept quiet [about this incident], and did not tell anyone at that time about anything they had seen.
Luke 24:31
[Immediately] their eyes were opened [i.e., they were given insight] so they could recognize Him. And [just then] He disappeared from their view [Note: The Greek says, "became invisible," suggesting that He vanished miraculously].
Acts 8:39-40
And when they came up out of the water, the Holy Spirit of the Lord [supernaturally?] directed Philip to go elsewhere and the eunuch did not see him anymore, as he continued on his journey rejoicing.
Acts 10:16
And after this was done three times, the huge sheet-like container was lifted back up into the sky.